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Electrohydrodynamic-Jet Deposition of Pt-Based Fuel Cell Catalysts

[+] Author Affiliations
Adam S. Hollinger

Penn State Erie, Behrend College, Erie, PA

Paul J. A. Kenis

University of Illinois at Urbana-Champaign, Urbana, IL

Paper No. FUELCELL2016-59454, pp. V001T05A003; 5 pages
doi:10.1115/FUELCELL2016-59454
From:
  • ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2016 Power Conference and the ASME 2016 10th International Conference on Energy Sustainability
  • ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology
  • Charlotte, North Carolina, USA, June 26–30, 2016
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-5024-4
  • Copyright © 2016 by ASME

abstract

Fuel cell electrodes are traditionally fabricated by hand-painting or spraying a catalyst ink onto a gas diffusion electrode or membrane. However, electrodes prepared via these techniques do not always have a uniform distribution of catalyst. Recently, electrohydrodynamic-jet (e-jet) printing has been developed as a method to deposit a variety of chemical and biological materials with excellent precision for various applications in electronics, biotechnology, and microelectro-mechanical systems. Here we demonstrate e-jet deposition of Pt-based fuel cell catalysts as a technique for achieving uniform catalyst distribution on microelectrodes. E-jet deposition is studied as a function of applied potential, and at 450 V, printed catalyst lines are very uniform at ∼10 μm in width. For electrode areas less than 1 mm2, deposition times are on the order of a few hours, which compares well with traditional hand-painting deposition times. Uniform catalyst distribution is important to reducing catalyst loading, and the deposition technique presented here shows significant possibility to produce electrodes with high uniformity.

Copyright © 2016 by ASME

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